Civil air defense projects, also called civil air defense fortifications, refer to underground protective buildings built separately to ensure the shelter of personnel and materials, civil air defense command, and medical rescue in wartime, as well as those built in combination with ground buildings that can be used in wartime. Air-raid basement. Civil air defense projects are important facilities to prevent sudden enemy attacks, effectively shelter personnel and materials, and preserve war potential; they are engineering guarantees to persist in urban battles and support long-term anti-aggression wars until victory.
Civil air defense equipment is equipment for civil air defense projects, such as searchlights, wooden frames, fire extinguishers, etc., which are used to prevent large casualties caused by air raids. It is all facilities and equipment in civil air defense projects.